Indoor single-phase epoxy resin casting current transformer complying with GB/T20840.1/2 and IEC61869-1/2 standards, insulation level 12/42/75kV, rated frequency 50/60Hz, secondary rated current 5A or 1A. Optional structural types: conventional 2s, conventional 4s, dual-ratio 4s with secondary tapping; optional primary current covers 20–3150A. Accuracy-class rated outputs vary by structure: 10VA/15VA/20VA/30VA/50VA for different accuracy grades; short-time thermal current ranges 11.25–100 kA, rated dynamic stable current ranges 28–160 kA; corresponding weights:26kg（2s）、39kg（4s / dual-ratio 4s）; ambient operating temperature -5℃~+40℃.
Indoor epoxy-cast CT for 12kV systems; suitable for metering and protection in MV switchgear.
| Paramètre | Spécification | Vérification |
|---|---|---|
| Type de produit | Current Transformer | [On Request] |
| Code modèle | LZZBJ9-12-175b-2s-4s | Marquage de la plaque constructeur |
| Tension primaire | 10kV | Essai de tension nominale (IEC 61869-1/3) |
| Tension secondaire | 5A/1A | Vérification du rapport à la fréquence nominale |
| Classe de précision | [On Request] | Essai de précision (IEC 61869-2 / IEEE C57.13) |
| Charge nominale | [On Request] | Essai de charge à la puissance VA nominale |
| Type d'isolement | Dry Epoxy Resin | Essais diélectriques selon la norme |
| Niveau d'isolement (BIL) | 12/42/75kV | Tenue à fréquence industrielle et au choc de foudre |
| Normes | [On Request] | Certifié selon les normes listées |
| Fréquence | 50/60Hz | Selon IEC 61869-1 |
| Environnement | Ambient: -5℃~+40℃ | Selon les limites de la fiche technique |
Idéal pour
Non recommandé pour
connect secondary terminals 1S1/1S2 for main winding; if dual-ratio, use tapping for alternate ratio. Protection winding (if present) uses 2S1-2S2. Never open-circuit the secondary of a CT while energized - hazardous voltage. Ground the secondary circuit at one point only.
Conforme à : [On Request]
S_total = ΣS_instrument + I₂² × (ρ × 2L / A)
Q : What is the insulation level of this CT?
R : 12kV system; power-frequency withstand 42kV; lightning impulse withstand 75kV peak.
Q : Can this CT be used outdoors?
R : No, it is designed for indoor use only.
Q : What are the available secondary currents?
R : 5A or 1A, depending on the model.
Les champs manquants sont marqués [On Request] — jamais inventés. Les lignes de vérification M2/M5/M6 suivent les conventions IEC 61869 / IEEE C57.13.
| Rated primary current (A) | Accuracy classCombined | Accuracy class & rated output (VA) | Short-time thermal current (kA) | Rated dynamic current (kA) | Weight (kg) |
|---|---|---|---|---|---|
| 20-100 | 0.2/0.5/5P10 | 10 | 150/1s | 375/1s | 26 |
| 200 | 0.2/0.5/5P10 | 10 | 150/1s | 375/1s | 26 |
| 300-400 | 0.2/0.5/5P10 | 10 | 31.5 | 80 | 26 |
| 500 | 0.2/0.5/5P10 | 10 | 45 | 112.5 | 26 |
| 600-1250 | 0.2/0.5/5P10 | 10 | 63 | 130 | 26 |
| 1500 | 0.2/0.5/5P10 | 10 | 100 | 160 | 26 |
| 2000-3150 | 0.2/0.5/5P10 | 10 | 100 | 160 | 26 |
Dessin d'encombrement et de dimensions du LZZBJ9-12-175b-2s-4s — cliquez sur l'image pour zoomer / afficher l'original.
